15867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com/* 25867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * [The "BSD licence"] 300fc68adf2e39aeb9fed35293f2576bbe729ec4bJesusFreke@JesusFreke.com * Copyright (c) 2010 Ben Gruver (JesusFreke) 45867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * All rights reserved. 55867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * 65867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * Redistribution and use in source and binary forms, with or without 75867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * modification, are permitted provided that the following conditions 85867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * are met: 95867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * 1. Redistributions of source code must retain the above copyright 105867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * notice, this list of conditions and the following disclaimer. 115867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * 2. Redistributions in binary form must reproduce the above copyright 125867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * notice, this list of conditions and the following disclaimer in the 135867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * documentation and/or other materials provided with the distribution. 145867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * 3. The name of the author may not be used to endorse or promote products 155867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * derived from this software without specific prior written permission. 165867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * 175867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 185867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 195867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 205867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 215867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 225867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 235867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 245867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 255867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 265867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 275867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com */ 285867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 295867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.compackage org.jf.dexlib.Code.Format; 305867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 315867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.comimport org.jf.dexlib.Code.Instruction; 325867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.comimport org.jf.dexlib.Code.OffsetInstruction; 33b3abca4c90929e31e6a8c52bc0178c44e3e53c6bJesusFreke@JesusFreke.comimport org.jf.dexlib.Code.Opcode; 345867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.comimport org.jf.dexlib.DexFile; 35fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.comimport org.jf.dexlib.Util.AnnotatedOutput; 365867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.comimport org.jf.dexlib.Util.NumberUtils; 375867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 385867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.compublic class Instruction20t extends Instruction implements OffsetInstruction { 39fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com public static final InstructionFactory Factory = new Factory(); 4016a911620ccf7b530b873fb71cf13e8dcb88ad28JesusFreke@JesusFreke.com private int targetAddressOffset; 415867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 42fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com public Instruction20t(Opcode opcode, int offA) { 43fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com super(opcode); 4416a911620ccf7b530b873fb71cf13e8dcb88ad28JesusFreke@JesusFreke.com this.targetAddressOffset = offA; 45fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com 4616a911620ccf7b530b873fb71cf13e8dcb88ad28JesusFreke@JesusFreke.com if (targetAddressOffset == 0) { 4716a911620ccf7b530b873fb71cf13e8dcb88ad28JesusFreke@JesusFreke.com throw new RuntimeException("The address offset cannot be 0. Use goto/32 instead."); 485867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com } 495867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 5016a911620ccf7b530b873fb71cf13e8dcb88ad28JesusFreke@JesusFreke.com //allow out of range address offsets here, so we have the option of replacing this instruction 51fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com //with goto/16 or goto/32 later 525867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com } 535867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 545867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com private Instruction20t(Opcode opcode, byte[] buffer, int bufferIndex) { 55fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com super(opcode); 565867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 57fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com assert buffer[bufferIndex] == opcode.value; 58fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com 5916a911620ccf7b530b873fb71cf13e8dcb88ad28JesusFreke@JesusFreke.com this.targetAddressOffset = NumberUtils.decodeShort(buffer, bufferIndex+2); 6016a911620ccf7b530b873fb71cf13e8dcb88ad28JesusFreke@JesusFreke.com assert targetAddressOffset != 0; 61fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com } 62fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com 6316a911620ccf7b530b873fb71cf13e8dcb88ad28JesusFreke@JesusFreke.com protected void writeInstruction(AnnotatedOutput out, int currentCodeAddress) { 6416a911620ccf7b530b873fb71cf13e8dcb88ad28JesusFreke@JesusFreke.com if (targetAddressOffset == 0) { 6516a911620ccf7b530b873fb71cf13e8dcb88ad28JesusFreke@JesusFreke.com throw new RuntimeException("The address offset cannot be 0. Use goto/32 instead"); 665867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com } 67fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com 6816a911620ccf7b530b873fb71cf13e8dcb88ad28JesusFreke@JesusFreke.com if (targetAddressOffset < -32768 || targetAddressOffset > 32767) { 6916a911620ccf7b530b873fb71cf13e8dcb88ad28JesusFreke@JesusFreke.com throw new RuntimeException("The address offset is out of range. It must be in [-32768,-1] or [1, 32768]"); 70fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com } 71fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com 72fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com out.writeByte(opcode.value); 73fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com out.writeByte(0x00); 7416a911620ccf7b530b873fb71cf13e8dcb88ad28JesusFreke@JesusFreke.com out.writeShort(targetAddressOffset); 75fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com } 76fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com 7716a911620ccf7b530b873fb71cf13e8dcb88ad28JesusFreke@JesusFreke.com public void updateTargetAddressOffset(int targetAddressOffset) { 7816a911620ccf7b530b873fb71cf13e8dcb88ad28JesusFreke@JesusFreke.com this.targetAddressOffset = targetAddressOffset; 795867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com } 805867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 815867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com public Format getFormat() { 825867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com return Format.Format20t; 835867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com } 845867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 8516a911620ccf7b530b873fb71cf13e8dcb88ad28JesusFreke@JesusFreke.com public int getTargetAddressOffset() { 8616a911620ccf7b530b873fb71cf13e8dcb88ad28JesusFreke@JesusFreke.com return targetAddressOffset; 875867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com } 885867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com 89fda2e631ac0b1ca092973b7fff4b2f38d2c23437JesusFreke@JesusFreke.com private static class Factory implements InstructionFactory { 905867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com public Instruction makeInstruction(DexFile dexFile, Opcode opcode, byte[] buffer, int bufferIndex) { 915867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com return new Instruction20t(opcode, buffer, bufferIndex); 925867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com } 935867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com } 945867263eb588f4671400895d1e6b01c01535061bJesusFreke@JesusFreke.com} 95